( Also posted in the 'General Discussion' / "Milk Tank Traffic on the LNER" thread )
FWIW, mention has previously been made (in this or the other thread), in connection with possible milk handling, of :-
1. Finsbury Park's 'depot' platform
(and also of the sidings which extended beyond, over Wells Terrace, and down into Lennox Road yard), which was adjacent to the Down side of the station : By the 1960s the platform was used for rail traffic by MacFisheries Ltd., and later still the premises became C.I.L. Shopfitters
(little if any rail traffic, though remaining rail-connected beyond the era of the 1975-76 Kings Cross-Biggleswade resignalling), with someone therein arranging for the arrival of Pullman car Doris to become for many years a static facility at the platform, which was also bedecked with other railway ephemera ; and -
2. A street-level milk handling facility of some sort in, or very close to, Wells Terrace, also on the Down side of the main line.
Also no doubt this reference ...
Cutter wrote: " .... the milk shed at FP being moved 20' on rollers in 1911 during station improvements and being given an electric lift to take churns down to the milk wharf at street level. .... "
... was in connection with the station's Down side expansion, when the Down Goods line was moved westwards, and an additional passenger line added through the station along with the addition of the new platforms 9/10 island.
Quite possibly the quoted 'electric lift' was the one I just about remember seeing, in the '60s I think, at the north end of the Up Fast & Slow lines platform island (numbered 3 & 4 pre-1970s rationalisation, after which they were 1 & 2, but since recent reinstatement to public use of the former Nos.1 & 2 island, they are now again Nos. 3 & 4).
By the time I started work at FP, it had gone, but older staff spoke of the milk subway which ran across from there, westwards to the Wells Terrace side of the station, though I never learned where remaining access to it might've been - it doubtless still existed then (mid-1970s), and may even continue to do so today, hidden down below the since further extended (northwards) platforms [Nos. 3/4 now extends, full width, over and beyond Stroud Green Road underbridge to accommodate 12-car EMUs and as an emergency turnback for 'InterCity' (Virgin East Coast etc.) trains], quite possibly even covering the site of the old No.6 signal box.
I don't know whether the previously referred to milk traffic unloading at FP was all done on the Up side, or was tripped back to the FP depot platform or Down passenger platforms from KX, or both.